package com.xiaoqiu.lease.web.admin.service.impl;

import com.xiaoqiu.lease.common.minio.MinioProperties;
import com.xiaoqiu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties minioProperties;

    private String bucketName;

    @Override
    public String upload(MultipartFile file) throws Exception{
        bucketName = minioProperties.getBucketName();

            boolean exists = minioClient.bucketExists(
                    BucketExistsArgs.builder()
                            .bucket(bucketName)
                            .build()
            );

            if (!exists) {
                minioClient.makeBucket(
                        MakeBucketArgs.builder()
                                .bucket(bucketName)
                                .build());
                minioClient.setBucketPolicy(
                        SetBucketPolicyArgs.builder()
                                .bucket(bucketName)
                                .config(createBucketPolicyConfig(bucketName))
                                .build());
            }
            String filename = new SimpleDateFormat("yyyyMMdd")
                    .format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
            minioClient.putObject(
                    PutObjectArgs.builder()
                            .bucket(bucketName)
                            .stream(file.getInputStream(), file.getSize(), -1)
                            .object(filename)
                            .contentType(file.getContentType())
                            .build());
            String url = minioProperties.getEndpoint() + "/" + minioProperties.getBucketName() + "/" + filename;
            return url;
    }

    private String createBucketPolicyConfig(String bucketName) {

        return """
                {
                  "Statement" : [ {
                    "Action" : "s3:GetObject",
                    "Effect" : "Allow",
                    "Principal" : "*",
                    "Resource" : "arn:aws:s3:::%s/*"
                  } ],
                  "Version" : "2012-10-17"
                }
                """.formatted(bucketName);
    }
}
